No sound is output from the headphones or from Master Out.

There are various possible causes. Check the following.

(1) Are the connection cables connected properly? Connect the connection cables properly. For details, see “Connections” in the Operating Instructions.
(2) Are terminals or plugs dirty? Wipe any dirt off terminals and plugs before making connections.
(3) Check the procedure to output audio.
[Outputting audio]

The following describes the procedure for outputting the channel 1 audio as an example.

Output audio from the master output.
Set the volume of the device connected to the [MASTER] output terminals (power amplifier, powered speakers, etc.) to an appropriate level. Note that the output sound may be loud if the volume is set too high.

1. Set the positions of the controls, etc., as shown below.
[MASTER LEVEL]: Turned fully counterclockwise
[TRIM]: Turned fully counterclockwise
[Channel fader]: Moved forward

2. Play the track.
3. Move the channel fader (Figure 9 below) backward.
4. Turn the [TRIM] control (Figure 1 below).
Adjust [TRIM] so that the orange indicator on the channel level indicator lights at the peak level.
5. Turn the [MASTER LEVEL] control (Figure 4 below) to adjust the speaker audio level.

Output audio from the headphones.
1. Set the positions of the controls as shown below.
[HEADPHONES LEVEL]: Turned fully counterclockwise

2. Press the headphones [CUE] button of channel 1.
3. Turn the [HEADPHONES LEVEL] control (Figure 5 below).
Adjust the level of audio output from the headphones to an appropriate volume.